Right off the top of my head - there's the 8th Annual Chicago WhiskyFest on April 4th and The 15th Annual Single Malt & Scotch Whisky Extravaganza in Chicago on October 2nd. Both of these events can be found on the Whisky.com Calendar of Events - See:
http://www.whisky.com/events.html
I'll see what else I can find for you!
